Activists are believed to have carried out the stunt in Tel Aviv, as passers-by collected some of the bags before police arrived.
A drone has dropped packets of suspected cannabis over an Israeli city after activists promised they would carry out the stunt.
Police said they arrested two men who allegedly flew the device over Tel Aviv’s Rabin Square, a site used for street protests and political rallies.
It came after the Green Drone group, which seeks to legalise marijuana in Israel, had said on its Telegram web messaging channel: “The time has come.”
The group added: “Is it a bird? Is it a plane? No, it’s the Green Drone sending you free cannabis from the skies.”
Police said they suspected the bags were filled with “a dangerous drug” and that officers managed to recover dozens of the packets.
Photos issued by police showed what appeared to be cannabis inside.
The Maariv news website, which posted photos of the drone dropping the packets, said passers-by took some of them before police arrived.
Footage showed people walking through busy traffic to pick up packets that had fallen on a road.
Currently, medical use of cannabis is permitted in Israel while recreational use is illegal but largely decriminalised.
In May, Israel approved exports of medical cannabis, paving the way for sales abroad that the government expects to produce hundreds of millions of dollars in revenue.